Integral Ad Science HoldingIAS
13F holders, Q2 2025 (June 30)170holders −17
35new positions
52sold out
4famous investors
$8.31avg. 13F price*
At the end of Q2 2025, 170 institutions reported holding Integral Ad Science Holding (IAS) in their 13F filings, down 17 from Q1 2025. 35 opened new positions and 52 sold out. The largest holders were Vista Equity Partners Management, LLC ($540.2M), Atlas Venture Advisors, Inc. ($188.8M) and Vanguard Group Inc. ($76.9M). 4 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio), Joel Greenblatt (0.0% of Gotham Asset Management's portfolio) and Cliff Asness (0.0% of AQR Capital Management's portfolio).
- Company
- Integral Ad Science Holding
- CUSIP
- 45828L108
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2025 → Q2 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 35 | $21.2M |
| Exits | 52 | $46.7M |
All 13F filers, Q1 2025 → Q2 2025: 10,935,878 shares bought and 8,537,418 shares sold, net +2,398,460 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 170 holders
| Vista Equity Partners Management, LLC | 55.60% | No change | 65,010,001 | $540.2M |
| Atlas Venture Advisors, Inc. | 44.51% | No change | 22,722,770 | $188.8M |
| Vanguard Group Inc. | 0.00% | Add +1.8% | 9,255,897 | $76.9M |
| Sunriver Management LLC | 7.86% | Add +8.0% | 8,822,914 | $73.3M |
| BlackRock, Inc. | 0.00% | Add +11.1% | 6,667,605 | $55.4M |
| Dimensional Fund Advisors LP | 0.01% | Add +21.8% | 5,406,393 | $44.9M |
| P2 Capital Partners, LLC | 8.22% | Add +2.1% | 4,910,000 | $40.8M |
| Rubric Capital Management LP | 0.40% | Reduce -6.2% | 2,971,951 | $24.7M |
| Corvex Management LP | 0.92% | No change | 2,618,000 | $21.8M |
| Clearbridge Investments, LLC | 0.02% | Reduce -7.4% | 2,325,232 | $19.3M |
| Ararat Capital Management LP | 8.13% | Add +35.6% | 2,156,154 | $17.9M |
| Geode Capital Management, LLC | 0.00% | Add +1.4% | 1,915,385 | $15.9M |
| Nuveen, LLC | 0.00% | Add +37.3% | 1,855,612 | $15.4M |
| Alta Fox Capital Management, LLC | 4.07% | Add +48.3% | 1,800,090 | $15.0M |
| Aberdeen Group plc | 0.02% | Reduce -11.5% | 1,764,731 | $14.7M |
| CenterBook Partners LP | 0.79% | Add +163.3% | 1,716,602 | $14.3M |
| State Street Corp. | 0.00% | Add +3.0% | 1,609,128 | $13.4M |
| Invenomic Capital Management LP | 0.75% | Reduce -4.2% | 1,580,066 | $13.1M |
| Ameriprise Financial Inc. | 0.00% | Add +1195.1% | 1,254,049 | $10.4M |
| Jacobs Levy Equity Management, Inc. | 0.03% | Reduce -24.9% | 1,035,774 | $8.6M |
| Frontier Capital Management Co. LLC | 0.06% | Reduce -15.0% | 822,643 | $6.8M |
| Northern Trust Corp. | 0.00% | Add +17.7% | 811,398 | $6.7M |
| Monimus Capital Management, LP | 4.44% | Add +36.5% | 665,465 | $5.5M |
| Bank of America Corp. | 0.00% | Add +20.0% | 639,093 | $5.3M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +4.6% | 616,114 | $5.1M |
| Morgan Stanley | 0.00% | Reduce -5.2% | 555,330 | $4.6M |
| Grizzlyrock Capital, LLC | 3.27% | New | 523,139 | $4.3M |
| Clearline Capital LP | 0.38% | New | 515,284 | $4.3M |
| Deutsche Bank AG | 0.00% | Reduce -6.3% | 492,825 | $4.1M |
| Circumference Group LLC | 3.02% | Add +66.7% | 350,000 | $2.9M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -17.6% | 320,420 | $2.7M |
| Barclays PLC | 0.00% | Add +137.4% | 318,987 | $2.7M |
| UBS Group AG | 0.00% | Add +96.1% | 304,539 | $2.5M |
| Rice Hall James & Associates, LLC | 0.13% | Add +24.6% | 293,156 | $2.4M |
| Bank of New York Mellon Corp | 0.00% | Add +0.3% | 292,037 | $2.4M |
| Quinn Opportunity Partners LLC | 0.19% | Add +57.6% | 260,000 | $2.2M |
| Renaissance Technologies | 0.00% | Reduce -47.2% | 232,300 | $1.9M |
| one8zero8, LLC | 0.41% | Add +12.0% | 209,425 | $1.7M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +63.4% | 195,579 | $1.6M |
| Susquehanna International Group, LLP | 0.00% | Add +7.7% | 186,773 | $1.6M |
| Qube Research & Technologies Ltd | 0.00% | Reduce -40.8% | 183,655 | $1.5M |
| HRT Financial LP | 0.01% | New | 170,208 | $1.4M |
| Algert Global LLC | 0.03% | New | 164,250 | $1.4M |
| Swiss National Bank | 0.00% | No change | 158,700 | $1.3M |
| Victory Capital Management Inc. | 0.00% | Add +307.6% | 153,446 | $1.3M |
| Rhumbline Advisers | 0.00% | Add +42.9% | 145,235 | $1.2M |
| American Century Companies Inc. | 0.00% | Add +50.1% | 132,463 | $1.1M |
| Invesco Ltd. | 0.00% | Add +32.2% | 132,129 | $1.1M |
| Two Sigma Investments, LP | 0.00% | New | 119,500 | $993K |
| Man Group plc | 0.00% | New | 117,229 | $974K |
| Royal Bank of Canada | 0.00% | Add +100.4% | 112,096 | $932K |
| Dana Investment Advisors, Inc. | 0.03% | Add +4.3% | 111,577 | $927K |
| Verition Fund Management LLC | 0.01% | Reduce -27.6% | 110,535 | $919K |
| OP Asset Management Ltd | 0.01% | Add +31.2% | 107,123 | $890K |
| Janney Montgomery Scott LLC | 0.00% | New | 101,124 | $840K |
| Manatuck Hill Partners, LLC | 0.31% | New | 100,000 | $831K |
| Factor Wealth Management LTD | 0.22% | Add +30.8% | 97,290 | $808K |
| HSBC Holdings PLC | 0.00% | Add +377.6% | 97,212 | $802K |
| AQR Capital Management | 0.00% | Add +131.2% | 94,085 | $782K |
| Jupiter Asset Management Ltd. | 0.01% | New | 88,272 | $734K |
| Legal & General Group Plc | 0.00% | Reduce -0.7% | 88,135 | $732K |
| JPMorgan Chase & Co. | 0.00% | Add +16.4% | 79,024 | $657K |
| Alliancebernstein L.P. | 0.00% | No change | 76,580 | $636K |
| Susquehanna Portfolio Strategies, LLC | 0.01% | New | 75,983 | $631K |
| California State Teachers Retirement System | 0.00% | No change | 74,874 | $622K |
| Envestnet Asset Management Inc. | 0.00% | Reduce -13.8% | 72,857 | $605K |
| Bank of Montreal | 0.00% | Add +39.4% | 72,138 | $599K |
| Canada Pension Plan Investment Board | 0.00% | No change | 72,000 | $598K |
| First Trust Advisors LP | 0.00% | Reduce -39.3% | 70,600 | $587K |
| State of Wisconsin Investment Board | 0.00% | Add +106.8% | 69,672 | $579K |
| Washington Harbour Partners LP | 1.69% | Reduce -29.6% | 68,520 | $569K |
| Wells Fargo & Company | 0.00% | Add +4.5% | 67,283 | $559K |
| AlphaQuest LLC | 0.05% | Add +476.9% | 66,270 | $551K |
| Russell Investments Group, Ltd. | 0.00% | Reduce -29.0% | 65,589 | $545K |
| Delphi Management Inc. | 0.52% | New | 64,804 | $539K |
| Principal Financial Group Inc. | 0.00% | New | 64,233 | $534K |
| Citadel Advisors | 0.00% | Reduce -53.4% | 63,817 | $530K |
| State Board of Administration of Florida Retirement System | 0.00% | Add +31.2% | 59,458 | $494K |
| Raymond James Financial Inc. | 0.00% | Reduce -13.0% | 59,310 | $493K |
| Versor Investments LP | 0.08% | Reduce -11.8% | 56,100 | $466K |
| Sei Investments Co. | 0.00% | New | 55,127 | $458K |
| Jane Street Group, LLC | 0.00% | Reduce -77.8% | 54,633 | $454K |
| Two Sigma Advisers, LP | 0.00% | New | 52,600 | $437K |
| Intech Investment Management LLC | 0.00% | Reduce -37.7% | 52,308 | $435K |
| Readystate Asset Management LP | 0.03% | New | 50,685 | $421K |
| Voya Investment Management LLC | 0.00% | Reduce -0.4% | 47,096 | $391K |
| Marshall Wace, LLP | 0.00% | Reduce -61.5% | 44,354 | $369K |
| MetLife Investment Management, LLC | 0.00% | No change | 44,048 | $366K |
| Blue Trust, Inc. | 0.00% | Add +59.5% | 43,831 | $364K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -2.5% | 42,263 | $351K |
| Manufacturers Life Insurance Company, The | 0.00% | Add +3.0% | 41,678 | $346K |
| Squarepoint Ops LLC | 0.00% | New | 40,902 | $340K |
| Alps Advisors Inc. | 0.00% | Add +4.0% | 40,770 | $339K |
| Citigroup Inc. | 0.00% | Reduce -37.7% | 38,499 | $320K |
| T. Rowe Price Associates Inc. | 0.00% | Add +16.7% | 37,392 | $311K |
| Pitcairn Co. | 0.02% | Add +0.1% | 35,942 | $299K |
| SG Americas Securities, LLC | 0.00% | Add +73.3% | 35,061 | $291K |
| Janus Henderson Group PLC | 0.00% | Reduce -85.9% | 34,000 | $282K |
| BNP Paribas Financial Markets | 0.00% | Add +77.7% | 33,165 | $276K |
| Federated Hermes, Inc. | 0.00% | Add +11.1% | 30,000 | $249K |
"% of holder's portfolio" is IAS's weight in each manager's 13F, not the share of Integral Ad Science Holding the manager owns.